Engine lubricating system.



e. w. D'UNHAM. ENGINE LUBBIOATING' SYSTEM. APPLICATION FILED OCT. 25, 1913.

Patented A g. 4, 1914.

1 [927672 far 6207! fiflyh/zafir fiyp m MMLQUW GEORGE W. DUNHAM, 015 DETROIT. MICHIGAN, ASSIGNGR TO SAXON 'MQTQB GAB COMPANY, OF DETROIT, MICHIGAN, A CORPORATION 01" MIGHIGAN.

ENGINE-LUBBIGATING SYSTEM.-

T J'aZZ whom it may concern:

Be it known that I, GEORGE 'W. DURHAM, a citizen of the llnited States OI" America, residing at Detroit, in the county of \Va vne and State of Michigan, have invented certain new and useful Improvements in Engine-Lubricating Systems. of which the foldisplacement when the lower end of said.

conduit is unsealed. Such systems operate satislactorlly when the pan is level, but

where, in the case of a motor vehicle engine on a grade, the pan is tilted. the oil therein will flow to one end, unsealing the oil. conduit and permitting an abnormal feeding of oil from the tank.

With my improvement this defect is over come by an arrangement which prevents the unsettling of the conduit upon the tilting of the pan and at the same time one which does not interfere with the normal operation of the system.

In the drawings: Figure 1 is a diagrammatic cross section through an engine showing my lubricating svstem applied thereto; 2 is a longitudinal section through the oil pan: F ig. 3 is a plan view thereof; Fig. l is a diagrammatic plan view of the guard and shut-off: Fig. 5 is a detail view or" the valve in section.

A. is an engine case of any suitable con' struction: B is the oil pan formed in the lower portion of said casing, and which may be divided longitudinally into sections lav transverse ribs C is an inverted oil receptacle having a .c recharge conduit E which leads downw'.- rdnto the pan and has its lower end sealed by the oil when at normal level. The lubricant is distributed from the pan by the usual splash svstem, and the oil thrown up on the side of the case is collected in an inclined trough F. which convevs it to one end of the casing".

\Yith the system as thus far described. a tilting of the case in one direction. as where the Vehicle is goino'up hill. will increase the depth of oil at the point t'or sealing the end of the conduit E, while in this saint) position the trougl F will operate to feed Specification of Letters Patent.

Application filed October -25, 1913.

Patented Aug. 4., 19] 4.

Serial No. 797,l$1.

the splashed oil to the uppel end of the engine cas ng. lhus the normal lubricating ellect will he maintained. On the other hand, it the cngn'ie 1s goii'ig down hill, the

conduit will he unsealed, thereby flooding the pan. 1 have therefore provided means for avoiding such a result which. preferably consists of a semicircular shield G placed about the lower end of the discharge conduit E, which will. hold the oil and maintain the seal when the engine is upon down-grade. T his will not, however, interfere with :1 normal operation on the level or on tip-grade. as the shield is cut away at one side as shown.

For convenience in filling the receptacle D, it is provided with a removable fuel cap at its upper end. If, however, this ca were to be removed Without shutting o the oil conduit E, the atmospheric air pressure would cause the discharge of all of the oil in the tank into the pan. A valve, such as H, placed in the conduit E, it closed, will prevent such a result, but there is danger that the operator may omit to close the valve. I have avoided this danger by placing a guard I upon the stem J of the -valve H, so that it will extend above the cap K for the tank whenever the valve is in open position. On the other hand, the turning of the valve stem J to close the valve will Withdraw the shield I so that the cap K mav be removed. I

With the construction as described in operation, whenever the engine is in level position the depth of the oil in the pan is determined by the position of the lower end of the tube or conduit E. When the casing is tilted upon a down-grade, the shield T- will still maintain a small body of oil surrounding the lower end of the tube E, so that the seal is not broken. and flooding of th oil is prevented. This will lessen the amount of oil fed by the splash system to the parts to be lubricated, as more of the lubricant. will be at the forward end of the casingwhich is lower han the rear end.

' l will return the lubricant to the forward end of the case, which is above the rear end,

and bv over-ti w all of the pockets in the pan will he maintained full.

The factthat the shield G is cut away at "izonmi amengemejnt of "the "mam;

as my 'inven"ion is:

dip en, and a shield pmme discharge end of-seid poekei. for maintaining i'pen is. tilteiiin one didiseh siege of lubrie log" sjrsiaem, the eombina n of M mi. discharge eonowew end; sealed by the a,

s iii .e sex ii when the pen is tilted ion and vd1scharging the oil direction,

1' oil'pzm of an oil tank ciosed h. i'essure at its upper end, eonriuit is}: the oil sealed in me iurzweieeni. is normal iei in said. pan-partially suit e enti of said conduitiseteimng the Mini Eemiis' ihe iuhrieani, to find its:

rzhere" the ensing is iiiiefi s system the eonihineiii 0; gm oilfldiseherge, eonsealed. by the normalie-hwlien tilted-in the op n' eii nozmmi level, and a avid sm'eounchng thedischarge onciuii, "forming a pocket for when the pan i's tiited in Q1 "him'ideting system; iJhE 'CQmbiDEr.

'igioegeee c ne when the an istiited in one diireetion;

hiie premitting a flow of oil from said pocket-When "til-ted in the opposite direction.

4e, In a" lubricating system the combination With-an oil pan of-an oil receptacle ebove thel'ev el of said pan having discharge (50116111113 sealed insaid pan at the normal level of oil therein, a' cap for closing the upper end of said tank to relieve the oil from atmospheric pressure, a shut-off for said oil discharge'conduit, and means for' preventing movement of said cap when S id conduit is open, said means being operatively connected with said shut-off and adjustable therewith to an inoperable position when said conduit'is close 5. In alubrieatin g system, the combination with an 011 pan of an 011 "tank above sand pan, having a discharge conduit sealed in said pa n at the normaile'vel of oil, a.

valve in said discharge conduit, a fill cap for the upper end of said tank, and a guard connected with the stem of said valve ex-. tending to intercept the'removal of said capwhen said .velve is other than its closed position. I

In testimony whereof I afiix my slgnature enonen W. DUNHAM. Witnesses:

Q, E" Gnneomr, F. 0. Lime, 

